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Curiosity about environmental changes drives Dr Katlego Mashiane’s PhD research

21 April 2023 | Story Leonie Bolleurs | Photo Supplied

In the small village of Ga-Mabotia about 25 km outside of Polokwane, Dr Katlego Mashiane grew up, surrounded by rocky mountains characterised by boulder outcrops, where he interacted with nature from an early age.

He recently obtained his PhD, majoring in Geography, from the University of the Free State (UFS), which was conferred on him during the April graduation ceremonies that took place on the UFS Qwaqwa Campus. The title of his dissertation is Grass nutrients estimation as an Indicator of rangeland quality using satellite remote.

Predicting the presence of biodiversity and nutrients in an area

Based on the principle that diverse grasslands tend to perform better, environmental changes threaten the resilience and services these grassland ecosystems provide. The study examined how many different types of plants and animals can be found at a particular place to enhance our understanding of the ecosystem’s value to humans, and that biodiversity loss will reduce these ecosystem services. Focusing on spatial modelling of grassland diversity, Dr Mashiane specifically investigated the influence of topography and remotely sensed satellite data on species richness and diversity in subalpine environments, and how they are affected by the availability of grass species. To determine this, he used a random forest machine-learning algorithm to find the best information in the data that could be used to estimate the levels of species richness, diversity, and nitrogen in a protected national conservation park.

His study discovered that some data types – such as the near-infrared variable and certain vegetation data (EVI and SAVI) – were especially useful for determining the number and variety of species in a certain area. With this information, scientists can create models that predict the presence of different types of biodiversity and nutrients in an area.

Playing a key role in protecting our natural assets

Equipped with this knowledge, one will be able to understand how to protect and preserve different types of biodiversity and promote the nutritional value of both plants and animals in the environment. “Land managers could use this information for conservation strategies,” states Dr Mashiane, who decided to pursue this study because he was curious about how environmental changes will affect species.

“Grasslands provide important ecosystem services underpinning human well-being, and therefore warrant our protection; I would like to play a role in protecting our natural assets and contribute to understanding our biomes, especially in the context of global change,” he says.

In the next five years, Dr Mashiane plans to pursue further research and mentor other students in his field of study.

News Archive

Three Kovsies receive prestigious Mandela Rhodes scholarship for 2015

2014-11-10

From the left: Lehlohonolo Mofokeng, Tumelo Morobane and Zola Valashiya
Photo: Stefan Lotter

The UFS continues to produce leaders and is proud to have three Mandela Rhodes scholars next year.

Lehlohonolo Mofokeng, Zola Valashiya and Tumelo Morobane all received this prestigious scholarship for 2015.

A Mandela Rhodes Scholarship provides full funding for a maximum of two years of postgraduate study. The award is open to all African citizens under the age of 30 years and recipients must study towards an honours or master’s degree at a recognised South African institution. Although there is no maximum number of awards, the scholarships are highly competitive, with fewer than 30 scholarships being awarded each year since its inception in 2005. The scholarships cover tuition, accommodation, meals, book allowance, general allowance, and travel expenses. Recipients of the Mandela Rhodes Scholarship are students with outstanding academic achievements, who also possess leadership ability, entrepreneurial skills, and a commitment to reconciliation. In addition to receiving funding for their studies, scholars also do a leadership development programme while in residence. The award is named after Nelson Mandela and Cecil Rhodes and is administered by the Mandela Rhodes Foundation, which is a partnership between the Nelson Mandela and the Rhodes Trusts.

Lehlohonolo has just finished his BEd Hons in Philosophy and Policy of Education at the UFS. He hopes to enroll for a master’s degree in Education Policy, Planning and Management at the University of Witwatersrand with his Mandela Rhodes Scholarship.

Zola is originally from Johannesburg and is completing his LLB degree at the UFS this year. He is planning to stay at the UFS in 2015 to do his LLM in Constitutional Law or International Human Rights Law.

Tumelo has a BSc Honours in Actuarial Science and will use this scholarship next year to study towards her master’s degree at the UFS.

“I chose to stay at the UFS because I am doing a great master's project with Munich Re through the UFS,” says Tumelo.

“Furthermore, the CEO of the Mandela Foundation, Mr Sello Hatang, asked me to work with the foundation on a few projects that mostly focus on keeping the girl child in school across Africa, as well as helping with providing training and workshops on entrepreneurship to young people.

“So, I am looking forward to a very busy year ahead of me, which will be filled with so much learning, growth and making a difference,” Tumelo says.

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